Aries Mu, known as Mu of Jamir, holds the mantle of Aries Gold Saint, renowned as both a master cloth restorer and a psychic prodigy. Born in Tibet and mentored by the former Aries Saint and Pope Shion, he ascended as the youngest Gold Saint of the XX Century. His Muvian lineage bestows distinct traits—circular brows and extraordinary psychic gifts like telekinesis, telepathy, and teleportation, ranking him among Athena’s most potent warriors. Following Shion’s assassination by Gemini Saga, Mu severed Sanctuary ties, withdrawing to the remote, energy-shielded realm of Jamir. There, he dwelled in seclusion with his apprentice Kiki, dedicating himself to restoring shattered Cloths—a process demanding rare Gammanium, Orichalcum, and the blood sacrifice of each armor’s wielder. Amid the Galactic Wars, Mu aided Bronze Saints Shiryu and Seiya, repairing their Pegasus and Dragon Cloths and teleporting them from Silver Saint ambushes. He later shielded Shiryu from Cancer Deathmask at Rozan, unmasking his Gold Saint identity. During the Sanctuary campaign, Mu guarded the Aries Temple but prioritized reforging the Bronze Saints’ Cloths over combat, guiding them to awaken the Seventh Sense—a cosmic revelation pivotal to their survival. In the Hades conflict, Mu defended Sanctuary against Specters and resurrected Gold Saints, clashing with his corrupted mentor Shion. He dueled foes like Papillon Myu, deploying Crystal Net and Starlight Extinction, and joined the forbidden Athena Exclamation alongside Scorpio Milo and Leo Aiolia to counter Gemini Saga’s trio, risking mutual destruction. After sacrificing himself to obliterate the Underworld’s Wailing Wall, Odin revived him in *Soul of Gold* to thwart Loki’s siege on Asgard, dismantling Yggdrasil’s defenses. Film adaptations diverge: Lucifer’s angels slew him in the fourth movie; Olympian gods imprisoned him in the fifth; he aligned with Athena in the sixth, acknowledging her sovereignty. His combat arsenal spans Crystal Wall—a reflective barrier—and Stardust Revolution, a stellar-force assault. Though pacifistic, he demonstrated tactical ferocity, teleporting Seiya from peril to safeguard Athena’s cause. Evolving from recluse to battlefield strategist, Mu balanced loyalty to Athena with emotional trials, notably confronting Shion’s corruption. His legacy persists through Kiki, his successor as Aries Saint in *Omega*, perpetuating his wisdom and duty across generations.